#include <stdio.h>
#include <stdlib.h>
#define N 100
#define M 20
int main()
{
    FILE *fp;
    char ch[N],name[N];
    int i=0;
    printf("Input file name:");
    scanf("%s",name);
    if((fp=fopen(name,"r"))==NULL)
    {
        printf("ERROR!");
        exit(0);
    }
    while(fgets(ch,17,fp))
    {
        od(ch,i++);
    }
    fclose(fp);

 }

